Samuel Langley (1834–1906)

Born 1834 CE, died 1906 CE.

Samuel Pierpont Langley (August 22, 1834 – February 27, 1906) was an American aviation pioneer, astronomer and physicist who invented the bolometer. He was the third secretary of the Smithsonian Institution and a professor of astronomy at the University of Pittsburgh, where he was the director of the Allegheny Observatory.

Text from the Wikipedia article Samuel_Langley, licensed CC BY-SA 4.0.

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Samuel Langley (1834–1906)

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